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Epam-systems Master DSA Sheet

This compilation contains exclusive, previously asked data structure and algorithm questions from real Epam-systems interviews. Focus on these core problem patterns to confidently tackle even the hardest interview challenges.

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Reverse Linked List
Asteroid Collision
Valid Parentheses6 Months
Pow(x, n)
Trapping Rain Water
Count Salary Categories
Longest Palindromic Substring
Longest Substring Without Repeating Characters
Generate Parentheses
Merge Intervals
First Missing Positive
Two Sum6 Months
Roman to Integer
Longest Common Prefix
Move Zeroes3 Months
Search in Rotated Sorted Array
String Compression
Merge Sorted Array3 Months
Two Sum II - Input Array Is Sorted
Reverse Words in a String
Maximum Subarray
Edit Distance
Multiply Strings
Palindrome Number
Partition Equal Subset Sum
Reverse String
Valid Anagram6 Months
Best Time to Buy and Sell Stock
3Sum
Rotate Array
Top K Frequent Elements
Group Anagrams6 Months
Valid Palindrome
Add Two Numbers
First Unique Character in a String
Longest Consecutive Sequence
Duplicate Emails
Remove Duplicates from Sorted Array
Sort Characters By Frequency
Unique Paths
House Robber
Reverse Linked List II
Kth Largest Element in an Array
Coin Change
Reverse Vowels of a String
Reverse Integer
Counter6 Months
Binary Search
Running Sum of 1d Array
Minimum Operations to Make a Uni-Value Grid
Maximum Difference Between Node and Ancestor